Patents by Inventor Antoine Pierre DuPont

Antoine Pierre DuPont has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Redundant shift registers for scanning circuits in liquid crystal display devices
    Patent number: 5796390
    Abstract: A display device having a plurality of select lines includes redundant select line scanners. Each scanner includes a plurality of substantially identical stages having an input terminal and an output terminal. The stages and select lines are ordinally numbered and correspondingly numbered stages are connected to opposite ends of the correspondingly numbered select lines by separate line segments. The stages within each scanner are cascaded by connecting the output terminal of each stage to the input terminal of the immediately succeeding stage. Failed stages of a scanner are replaced by the correspondingly numbered stage of the other scanner simply by opening the separate line segment of the failed stage.
    Type: Grant
    Filed: March 24, 1993
    Date of Patent: August 18, 1998
    Assignee: Thomson, S.A.
    Inventors: Antoine Pierre DuPont, Dora Plus